Speciation of Cr(III) and Cr(VI) in Environmental Water Determined by Selective Separation and Preconcentration on the PBST-RSP

摘要: In this paper, a new method for the speciation, separation and preconcentration of Cr(VI) Cr(III) in water was developed. The procedure presented based on two forms chromium show different adsorption capacities Porous nano-barium strontium titanate by reversed-phase suspension polymerization sol-gel (PBST-RSP) at pH values, that is, Cr (VI) selectively retained 1-2, but Cr(Ⅲ) can't be adsorbed. Whereas (III) 7-14, Hence complete is possible. Retained were eluted with 1 mol/L HCl NaOH, respectively. concentration measured flame atomic absorption spectrometer. successfully applied speciation surface drinking samples results. Keywords-Porous titanate, Speciation analysis, Chromium, Water I INTRODUCTION